Lower Lake Reservoir Report
Nearby: Middle Lake Tingley Lake
Last Updated: December 29, 2025
Lower Lake, located in Harford Township, Pennsylvania, is a private recreational water resource regulated by the Pennsylvania Department of Environmental Protection.
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Summary
Built in 1919, this stone dam spans 100 feet in length and stands at a height of 7 feet, with a storage capacity of 123 acre-feet. The lake covers a surface area of 50 acres and has a drainage area of 2.3 square miles, fed by the East Branch Martin Creek.
With a low hazard potential and fair condition assessment, Lower Lake serves as a popular spot for outdoor enthusiasts seeking recreational activities such as fishing, boating, and picnicking. Despite its age, the dam remains structurally sound and is regularly inspected by state authorities to ensure public safety. Whether you're a water resource or climate enthusiast, Lower Lake offers a picturesque setting to enjoy nature and unwind in the heart of Susquehanna County.
Year Completed |
1919 |
Dam Length |
100 |
Dam Height |
7 |
River Or Stream |
EAST BRANCH MARTIN CREEK |
Primary Dam Type |
Stone |
Surface Area |
50 |
Drainage Area |
2.3 |
Nid Storage |
123 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
7 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Susquehanna River At Conklin Ny
|
2930cfs |
Choconut Creek Near Choconut
|
23cfs |
Lackawanna River Near Forest City
|
43cfs |
Tunkhannock Creek Near Tunkhannock
|
152cfs |
Susquehanna River At Windsor Ny
|
2840cfs |
Susquehanna River At Meshoppen
|
6930cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Lower Lake